Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 1002 for “"functional groups"”.
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Functional Groups of Soil Humic Acids
Made available in DSpace on 2014-12-10T17:12:30Z (GMT). No. of bitstreams: 1 6706573.pdf: 4436093 bytes, checksum: 1ada50ce9686c7d5981c2ede56cd4c63 (MD5) Previous issue date: 1966
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Functional groups in rhodopsin and the rod photoreceptor membrane
Contains fulltext : mmubn000001_188726705.pdf (Publisher’s version ) (Open Access)
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Cocrystallisation involving the thioamide, amide and imide functional groups
… that incorporated the thioamide, amide and imide functional groups. A particular emphasis was placed on the characterisation of these cocrystals by single crystal X-ray diffraction methods. In Chapter One a summary of the intermolecular interactions utilised in this work and a short review of the …
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Methodology for the syntheses of pharmaceutically significant functional groups
… of nitrogen-containing heterocycles, polar functional groups such as fluorides or sulfoximines, and stereoisomers that are vital to their bioactivity. As a result, new methods to synthesize these important functional groups are continually in demand. Three main methods to synthesize common …
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Spatiotemporally explicit incidence analysis of plant functional groups in metacommunities
Diese Arbeit untersucht die Rolle von Metagemeinschaftsmechanismen für die Diversität von Pflanzengemeinschaften in einer dynamischen, urbanen Landschaft. Dazu wird auf der Basis funktioneller Merkmale die relative Bedeutung von Ausbreitungslimitierung, abiotischem Stress und Konkurrenz bestimmt, …
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Identifying functional groups in microbial communities based on ecological patterns
… by a group of multiple species (i.e., a functional group) at the same time. However, identifying these functional groups remains to be a major challenge for structure-function mapping in microbiome studies. Instead of relying on annotation-based methods that are highly biased for a few …
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Effects of functional groups on physicochemical properties of carbon and zeolites
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-05-01
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Finding functional groups of genes using pairwise relational data : methods and applications
… often have similar gene profiles. Clustering groups of genes with similar profiles can hence deliver candidate gene modules. Pairwise similarity measures derived from these profiles are used as input to the popular hierarchical agglomerative clustering algorithms; however, these algorithms …
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The Donor Properties of Dimethyl Cyanamide and Magnetic Anisotropies of Functional Groups
Made available in DSpace on 2014-12-09T17:35:50Z (GMT). No. of bitstreams: 1 6801766.pdf: 7706783 bytes, checksum: d5fda1b9bd3d9f27fcecae8503a047b5 (MD5) Previous issue date: 1967
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Habitat models for plant functional groups with respect to soil parameters and management
… determining the occurrence of these plant functional groups (PFGs). Furthermore, habitat models were developed. With these models it is possible to predict the probabilities of occurrence for the PFGs under certain environmental conditions and utilisation regimes, and statements can be made …
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Natural selection on MRNA secondary structure and its correlation with protein functional groups
… The distributions of MFEs of mRNAs of 25 broad functional classes of proteins (COGs - Clusters of Orthologous Groups) of five microbes and yeast correlate to functional class. mRNA prefixes have a distinctive MFE signature. The naturally occurring prefixes display more structure, on average, …
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Chiral macromolecules bearing configurationally ordered dipolar functional groups: Molecular design, synthesis and phases
… between configurational order among dipolar functional groups bound to a semirigid polymer backbone and the nature of the condensed phases of these materials. The investigation first involved the synthesis of a family of macromolecules designed to address this relationship. The parent …
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Chemical modification of catalytically essential functional groups in the active site of papain
… thiol group, in 6 to 10 of the nineteen tyrosyl groups, and in six of the fifteen free carboxyl groups. The free thiol group could be essentially completely protected from reaction by converting it to its mercuric derivative with HgCl₂, and the tyrosyl modification was shown to have no effect on …
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Teaching analogies and metaphors to enhance communication in interdisciplinary and cross-functional groups
In interdisciplinary and cross-functional groups and teams, members pool diverse perspectives for the purposes of new product design and innovation, but these different perspectives may cause interruptions in effective communication. This study examines the use of analogies and metaphors as …
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Synthesis and Characterization of Multiphase Block Copolymers: Influence of Functional Groups on Macromolecular Architecture
… characterization of the composites with UPy-functionalized carbon nanotubes was performed. The composites enhanced the mechanical properties and the UPy-UPy association between the matrix polymer and carbon nanotubes prevented the decrease of an elongation at break. The matrix polymer was …
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Synergistic coordination of oxygen functional groups with catalyst surface promotes hydrogenolysis of lignin model compounds
… surface through coordination of multiple oxygen groups on the substrate and through the formation of Pd–O bonds. We found two parallel reaction pathways during lignin RCF. The desired pathway is the β–O–4 cleavage reaction, with an activation barrier of 75-85 kJ/mol. The second pathway is …
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Storage effects: the relationship between the hydrological dynamics of small infield pools and plant functional groups
Small infield pools are important habitats. But, the properties that make them attractive for several wetland species as well as the traits which allow species to survive in such high dynamical systems are largely unknown. I investigated the habitat quality with a time series model which requires …
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The effect of the positions and molecular weight of hydrophilic functional groups of surfactants on gas absorption rates
… the molecular weight of surfactant hydrophilic functional groups on the rate of gas absorption. A quiescent unsteady-state absorption apparatus was used with carbon dioxide and water as the absorption system. Three surfactants with hydroxyl groups were selected for study, namely, n-octanol, …
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Utilising Boron containing Lewis Acid Functions as "Stores" for Hydride and Other functional groups and its impact on Catalytic Reactions
… storage and manipulation of hydrogen and other functionalities within ligand cooperative catalytic cycles. <br/>Focusing, in particular, on the use of 2-mercaptopyridyl base boron ligands.<br/><br/>The thesis first builds on work previously undertaken by Owen on the synthesis and reactivity of …
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